Locking device.



E. L. DENMAN.

LOCKING DEVICE APPLICATION FILED SEPT. I0. 1917. RENEWED MAY 25,1918.

Patented July 9, 1918.

ELMER LDENMHN 3&1, MW

ELMEB DENMAN, QHAR' ESTON, I LIN IS.

LOCKING DEVICE.

Specification of Letters Patent. I

Patented July 9, 1918.

Application filed September 10, 1917, Serial No. 190,597. Renewed May25, 1918. Serial No. 236,650.

To all whom it may concern:

Be it known that I, ELMER L. DENMAN, a citizen of the United States,residing at Charleston, in the county of Coles and State of Illin'ois,have invented certain new and useful Improvements in Locking Devices, ofwhich the following is a specification, reference being had to theaccompanying drawings.

This invention relates to certain improvements in looking devices andhas relation more particularly to a device of this general characterespecially designed and adapted for use in connection with a pedal orother movable member, and it is an object of the invention to provide anovel and improved device of this general character which serveseffectually to prevent movement of a pedal or other member in onedirection and which assumes an operative engagement with said pedal ormember in an automatic manner.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improved lockingdevice wherein certain important advantages are attained and the devicerendered simpler, less expensive and otherwise more convenient andadvantageous for use, as will be hereinafter more fully set forth.

The novel features of my invention will hereinafter be definitelyclaimed.

In order that my invention may be the better understood I will nowproceed to describe the same with reference to the accompanying drawingswherein:

Figure 1 is a fragmentary view partly in elevation and partly in sectionillustrating a locking device constructed in accordance with anembodiment of my invention and in applied position;

Fig. 2 is an enlarged view in elevation of my improved locking device asherein disclosed; and

Fig. 3 is a view in elevation of the work ing edge of my improved deviceas herein disclosed.

As disclosed in the accompanying drawing S denotes a standard generallyemployed in connection with shoemakers stands and which is provided witha longitudinally disposed slot 1 in which works the pedal P generallyemployed for controlling the action of the holding straps used inconnection with shoemakers stands for maintaining the shoe in appliedposition upon a last,

My improved holding device comprises an elongated flat member M havingone edge disposed substantially on a curvature and which edge isprovided with a plurality of longitudinally disposed teeth 2 and whereinsaid teeth are arranged on different angles relative to the longitudinalaxis of the memher 1. It is also to be noted that the upper edges 3 ofthe teeth 2 are downwardly inclined relative to the lower edges 4: for apurpose which will hereinafter be more par ticularly referred to.

The upper end portion of the member M is of gradually increasing widthas indicated at 5 to afford additional weight and said upper end portionof the member M in close proximity to the curved or toothed edge thereofis provided with an opening 6 to afiord means whereby the member M maybe pivotally engaged with the pintle or supporting member 7 suitablyengaged with the standard S.

The member M is applied in a position in close proximity to the slot 1so that the weight of the member will cause the same to assume bygravity a position whereby the teeth 2 of the member overlie the slot 1so that said teeth may be readily engaged with the pedal P as the sameis depressed. The upper inclined edges 3 of the teeth permit a readydownward movement of the pedal P while the lower edges 4 of the teethserve to prevent upward movement of the pedal. When it is desired torelease the member M from the pedal P it is only necessary that thepedal be given a sudden downward movement which will result in themember M swinging in a direction away from the slot 1 and which permitsthe pedal P to move up wardly before the member M returns to its normalposition as assured by gravity.

From the foregoing description, it is thought to be obvious that alocking device constructed in accordance with my invention isparticularly well adapted for use by reason of the convenience andfacility with which it may be assembled and operated and it will also beobvious that my invention is susceptible of some change and modificationwithout materially departing from the principle and spirit thereof andfor this reason I do not wish to be understood as limiting myself to theprecise arrangement and formation of the several parts herein shown incarrying out my invention in practice except as hereinafter claimed.

I claim: I In combination With a support provided With a Verticallydirected slot; a member disposed through said slot and movable 1011;-gitudinally thereof, a locking member pivotally engaged at its upper endportion with thesnpp'ort'and'haviiigone edge toothed for longitudinalportion of the slot, the pivoted end portion of the member at the sideof 5 the pivotal'co nne'ction" remote from the slot being-v of increasedWidth to facilitate the maintenance of the locking member in its normalposition. i V

In testimony whereof I hereuntdaflix my 20 signature iifthe presenceoftwo Witnesses.

' ELMER L. -DENMAN.

Witnesses:

J ACOB' "HARTWICK', EDWARD L. DENMANZ- Gopies of'thispatentniaybe'obtain'ed forfiv-cents eaelfylojraddrsing the Commissioner-ofPatents; Washingtong-DSG?

